User manager: fix deleting desktop/managed users with the keyboard

User manager: fix deleting desktop/managed users with the keyboard

BUG=390820
TEST=Start chrome with --new-profile-management. Choose "Not <profile>" from
the avatar bubble. In the User Manager, press 'tab' until focus reaches the
drop down arrow of a user pod. Press 'enter', whcih should show you the delete
button. Press the down arrow to focus the delete button, and press 'Enter'. This
should show the warning view, with the big red button focused, and pressing
'Enter' again should delete the pod. Yay!

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=281852

[noms (inactive), 2014-07-07 17:29:41]

Hi Nikita,

Fixed an a11y bug in deleting desktop/managed users in the User Manager using
the keyboard. Please take a look.

[Nikita (slow), 2014-07-08 11:58:53]

lgtm

https://codereview.chromium.org/373813002/diff/20001/chrome/browser/resources...
File chrome/browser/resources/login/user_pod_row.js (right):

https://codereview.chromium.org/373813002/diff/20001/chrome/browser/resources...
chrome/browser/resources/login/user_pod_row.js:880: chrome.send('removeUser',
nit: Make sense to extract 
chrome.send('removeUser', ...) call into a separate method.

[noms (inactive), 2014-07-08 14:14:48]

https://codereview.chromium.org/373813002/diff/20001/chrome/browser/resources...
File chrome/browser/resources/login/user_pod_row.js (right):

https://codereview.chromium.org/373813002/diff/20001/chrome/browser/resources...
chrome/browser/resources/login/user_pod_row.js:880: chrome.send('removeUser',
On 2014/07/08 11:58:53, Nikita Kostylev wrote:
> nit: Make sense to extract 
> chrome.send('removeUser', ...) call into a separate method.

Done.

[noms (inactive), 2014-07-08 17:03:00]

The CQ bit was checked by noms@chromium.org

[commit-bot: I haz the power, 2014-07-08 17:04:30]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/noms@chromium.org/373813002/40001

[commit-bot: I haz the power, 2014-07-08 18:15:27]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)

[commit-bot: I haz the power, 2014-07-08 22:43:15]

Change committed as 281852